All the Weyrs of Pern by Anne McCaffrey
Paperback. Condition: Good. 1992. Del Rey. Stock Image. Michael Whelan (illustrator)
Book 11 in the Dragonriders of Pern series.
Led by Masterharper Robinton and F'lar and Lessa, the people of Pern excavate the ancient remains of the planet's original settlement and uncover the colonists' voice-activated artificial intelligence system.